Ethmoidal nerves
Encyclopedia
The ethmoidal nerves, which arise from the nasociliary nerve
, supply the ethmoidal cells; the posterior branch leaves the orbital cavity through the posterior ethmoidal foramen
and gives some filaments to the sphenoidal sinus. There are two ethmoidal nerves on each side of the face:
Nasociliary nerve
The nasociliary nerve is a branch of the ophthalmic nerve. It is intermediate in size between the two other main branches of the ophthalmic nerve, the frontal nerve and the lacrimal nerve, and is more deeply placed.-Path:...
, supply the ethmoidal cells; the posterior branch leaves the orbital cavity through the posterior ethmoidal foramen
Posterior ethmoidal foramen
Lateral to either olfactory groove are the internal openings of the anterior and posterior ethmoidal foramina .The posterior ethmoidal foramen opens at the back part of this margin under cover of the projecting lamina of the sphenoid, and transmits the posterior ethmoidal vessels and nerve....
and gives some filaments to the sphenoidal sinus. There are two ethmoidal nerves on each side of the face:
- posterior ethmoidal nervePosterior ethmoidal nerveThe posterior ethmoidal nerve is a branch of the nasociliary nerve.It passes through the posterior ethmoidal foramen, with the posterior ethmoidal artery.It carries sensory information from the sphenoid sinus and posterior ethmoidal air cells....
- anterior ethmoidal nerveAnterior ethmoidal nerveThe anterior ethmoidal nerve is a nerve which provides sensory branches to the nasal cavity. The nerve is the continuation of the Nasociliary nerve after it enters the anterior ethmoidal foramen into the anterior ethmoidal air cells. The nasociliary nerve arises from the Ophthalmic division of...